tan man, it's time to replace the engine mounts if they are the original ones. Stay away from Uro engine mounts. Either buy them from a MB dealer or buy ones made in Germany. Best to replace the transmission mount at the same time.

Replaced the engine mounts on our 1995 E320 recently. It's a relatively simple DIY job if you have a floor jack and ramps/jack stands, or access to a lift. A quick summary follows:
1. Raise car high enough that you can work under it comfortably.
2. Remove both engine mount to cross member 17mm bolts.
3. Jack under the oil pan to raise the engine mounts clear of the cross member. (Place a short length of 2 x 6 under the rear of the oil pan to prevent damaging it.)
4. Remove the four 13mm engine mount bracket bolts on each side and remove the engine mount/bracket assembly.
5. Replace the engine mount on each assembly (a 17mm bolt secures the engine mount to the bracket) and reinstall the engine mount/bracket assembly on each side.
6. Lower the engine so the engine mounts contact the cross member and reinstall the 17mm bolts. A drift pin may be needed to align the bolt hole with the cross member hole.
7. Lower the car to the floor.

__________________
Fred Hoelzle